Discuss the underlying relationship between the continuous and discrete time models of a linear time invariant system. However, i am unsure of how to approach and answer the question. Any reference to models or understanding would be appreciated thank you!

My understanding so far is as such.

Discrete time signals are simply a collection of individual signals. These discrete signals can be a product of sampling a continuous time signal, or it can be a product of truly discrete phenomena. Thus, it can be stated that discrete time LTI is a sampling of continuous LTI. Additionally, it can also be stated from the aforementioned that it is also defined by differing time periods, i.e continuos is from t0 while sampling is from the sampling period taken ie t1 to t1+x.

I am unsure of how to proceed and any help will be appreciated thank you!